Turn Your Headphones Into A Microphone

If you do not have a microphone for your computer, you can use your headphones by plugging them into the microphone input on your sound card: most headphones can become microphones, but sound quality is quite poor.

Headphones transform an electric signal into an acoustic signal, while microphones do the opposite. While the components of both devices are similar, each is optimized for its function. This is why the sound quality of the headphone is poor and inversely, if you decide to use your microphone as a speaker, you can cause damage.